Javers 无法比较一些模拟对象

Question

我正试图找到一种方法来修复工作中的一些单元测试。我们使用 javers.compare() 来记录我们修改对象后的差异，但是出现了一个奇怪的错误，我几乎没有找到关于它的 none 信息。我们所有的对象都实现了 Serializable 接口，当传递给 javers 时它会正确处理它们，在单元测试中当我传递一个模拟对象时，javers 正常运行，除非对象中有另一个对象。我已经让内部对象实现了 Serializable 接口，我试图让它们成为瞬态的，但没有任何效果。它总是失败。

正如我所说，如果对象被实例化，它们将被正常处理，但相同对象的模拟版本会导致错误。

与 javers.compare() 相比，mockito 模拟时来自此 class 的对象不会导致错误。

public class SomeEntry implements Serializable {
    private Long id;
    private String aString;
    private Double aNumber;
    private List<Long> aListOfNumbers;
}

来自此 class 的对象仅在被 mockito 模拟时才导致 javers.compare() 错误，如果正常实例化则不会。

public class OtherEntry implements Serializable {
    private Long id;
    private String aString;
    private Double aNumber;
    private SomeOtherEntry someOtherEntry;
}

public class SomeOtherEntry implements Serializable {
    private Long id;
}

在 OtherEntry 内部创建 SomeOtherEntry transient 什么都不做，并且会出现错误。

这是 i javers.compare() 使用模拟对象产生的错误

java.lang.UnsupportedOperationException: Attempted to serialize java.lang.Class: {classpath}/{classname} Forgot to register a type adapter?

    at com.google.gson.internal.bind.TypeAdapters.write(TypeAdapters.java:73)
    at com.google.gson.internal.bind.TypeAdapters.write(TypeAdapters.java:69)
    at com.google.gson.TypeAdapter.write(TypeAdapter.java:191)
    at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:69)
    at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.write(ReflectiveTypeAdapterFactory.java:127)
    at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.write(ReflectiveTypeAdapterFactory.java:245)
    at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:69)
    at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.write(ReflectiveTypeAdapterFactory.java:127)
    at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.write(ReflectiveTypeAdapterFactory.java:245)
    at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:69)
    at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.write(ReflectiveTypeAdapterFactory.java:127)
    at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.write(ReflectiveTypeAdapterFactory.java:245)
    at com.google.gson.Gson.toJson(Gson.java:704)
    at com.google.gson.Gson.toJsonTree(Gson.java:597)
    at com.google.gson.Gson.toJsonTree(Gson.java:576)
    at com.google.gson.internal.bind.TreeTypeAdapter$GsonContextImpl.serialize(TreeTypeAdapter.java:155)
    at org.javers.core.json.typeadapter.commit.CdoSnapshotStateTypeAdapter.lambda$toJson[=13=](CdoSnapshotStateTypeAdapter.java:28)
    at org.javers.core.metamodel.object.CdoSnapshotState.lambda$forEachProperty(CdoSnapshotState.java:61)
    at java.util.HashMap$EntrySet.forEach(HashMap.java:1044)
    at org.javers.core.metamodel.object.CdoSnapshotState.forEachProperty(CdoSnapshotState.java:61)
    at org.javers.core.json.typeadapter.commit.CdoSnapshotStateTypeAdapter.toJson(CdoSnapshotStateTypeAdapter.java:28)
    at org.javers.core.json.typeadapter.commit.CdoSnapshotStateTypeAdapter.toJson(CdoSnapshotStateTypeAdapter.java:13)
    at org.javers.core.json.JsonConverterBuilder.lambda$registerJsonTypeAdapterForType(JsonConverterBuilder.java:167)
    at com.google.gson.internal.bind.TreeTypeAdapter.write(TreeTypeAdapter.java:81)
    at com.google.gson.internal.bind.TreeTypeAdapter.write(TreeTypeAdapter.java:74)
    at com.google.gson.Gson.toJson(Gson.java:704)
    at com.google.gson.Gson.toJson(Gson.java:683)
    at com.google.gson.Gson.toJson(Gson.java:638)
    at com.google.gson.Gson.toJson(Gson.java:618)
    at org.javers.core.json.JsonConverter.toJson(JsonConverter.java:54)
    at org.javers.core.snapshot.ObjectHasher.hash(ObjectHasher.java:28)
    at org.javers.core.metamodel.object.GlobalIdFactory.createId(GlobalIdFactory.java:69)
    at org.javers.core.graph.LiveCdoFactory.create(LiveCdoFactory.java:29)
    at org.javers.core.graph.LiveCdoFactory.create(LiveCdoFactory.java:15)
    at org.javers.core.graph.EdgeBuilder$MultiEdgeContainerBuilderFunction.apply(EdgeBuilder.java:72)
    at org.javers.core.metamodel.type.CollectionType.mapToList(CollectionType.java:47)
    at org.javers.core.metamodel.type.CollectionType.map(CollectionType.java:34)
    at org.javers.core.graph.EdgeBuilder.createMultiEdge(EdgeBuilder.java:55)
    at org.javers.core.graph.ObjectGraphBuilder.buildMultiEdges(ObjectGraphBuilder.java:91)
    at org.javers.core.graph.ObjectGraphBuilder.buildEdges(ObjectGraphBuilder.java:71)
    at org.javers.core.graph.ObjectGraphBuilder.buildGraphFromCdo(ObjectGraphBuilder.java:58)
    at org.javers.core.graph.ObjectGraphBuilder.buildGraph(ObjectGraphBuilder.java:47)
    at org.javers.core.graph.LiveGraphFactory.createLiveGraph(LiveGraphFactory.java:39)
    at org.javers.core.diff.DiffFactory.buildGraph(DiffFactory.java:99)
    at org.javers.core.diff.DiffFactory.compare(DiffFactory.java:54)
    at org.javers.core.JaversCore.compare(JaversCore.java:173)
    at The class that is being tested.
    at The Unit Test.
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.junit.runners.model.FrameworkMethod.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access[=13=]0(ParentRunner.java:58)
    at org.junit.runners.ParentRunner.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
    at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
    at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)

Answer 1

Javers 设计为使用静态类，因此您编写的类。您应该避免将 Hibernate 或 Mockito 动态生成的动态代理传递给 Javers。那些类添加了一些您肯定不会被压缩和版本控制的技术领域。参见 https://javers.org/documentation/domain-configuration/#ignoring-things

我的建议是，避免嘲笑你自己的类，尤其是实体。这将使您的测试更强大，更简单。

Javers 无法比较一些模拟对象

Javers cannot compare some mocked objects

java

mockito

gson

javers